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Helium has a nuclear charge of +2 and 2 electrons in a 1s orbital. Hydrogen has a nuclear charge of +1 and just one electron in a 1s orbital. The extra charge on the nuclees means that the electrons in He are more tightly bound than in hydrogen thuis reflected in the ionization energy of 2372 kJ/mol for He and about 1312 kJ/mol for hydrogen. For helium t the "outer shell" is full, a "stable " configuration.
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Is hydrogen a substance made up of one kind of atom?
Yes and no. There are 3 isotopes of hydrogen. All are hydrogen but each is different because they have different weights because they have different numbers of neutrons. Hydrogen is an element and it is defined by the number of protons so, in that respect, all hydrogen is the same because all hydrogen has a single proton.
How is the nucleus of hydrogen atom different from the nucleus of the helium atom?
The nucleus of hydrogen has 1 proton, whereas that of helium has 2 protons.
How is the nucleus of the hydrogen atom different from the nucleus helium atom?
The nucleus of hydrogen has 1 proton, whereas that of helium has 2 protons.
How hydrogen atom is different from all other elements?
The hydrogen atom has no neutrons in the nucleus. There is just a proton and an electron.
How is hydrogen atom and radium atom different for each other?
Hydrogen atom has 1 proton and 1 electron; radium has 88 protons and electrons. Also radium is radioactive.
How many hydrogen atoms could become a single carbon atom?
Its impossible. The carbon and hydrogen are 2 different elements, they are 2 different atoms.If hydrogen atoms connect that's going to become a hydrogen molecule.And carbon is an atom, not a molecule.
Is the mass of a hydrogen atom different from the mass of an oxygen atom?
all atoms have different masses Mass of an atom is due to protons and neutrons present in an atom and number of proton is something that distinguish between atoms, therefore mass of hydrogen is different to the mass number of oxygen, hydrogen's mass is 1 as it has only 1 proton and no neutrons, and oxygen mass's is 16 as it has 8 protons and 8 neutrons.
Which is the smallest atom?
The smallest atom is hydrogen.
How many different elements and atoms are in a water molecule?
There are two different elements in a water molecule. Its composed of 2 hydrogen atoms and one oxygen atom. H_2O
How many electrons are hee in an atom?
The will depend on the type of atom. The number is different for an atom of hydrogen, lead, gold, fluorine, etc.
What is different between molecule and atom?
Atom is the basic unit of any element. Molecule is an assembly of different atoms. Hydrogen is an atom. Oxygen is an atom. Two hydrogen atoms and one oxygen atom electrically bonded to each other are water - a molecule.
What element in the universe has the smallest atom?
the atom with the least mass is the hydrogen atom
